paint brush Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a tool with bristles used to apply paint. Example Sentence Wash your paint brush when you finish painting. More Example Sentences The paint brush was full of bright colors. Synonyms brush; art tool; painting tool Antonyms eraser Hear It! Say It! Write It! paint brush Switch to cursive Start Share with your friends: